Dear Mehdi, >>>>> On a side note, you should check ... > In case, it isn't obvious: I already read 583183 before closing and I > explained why advi-examples isn't open to such flaws. I see: that comment was not directed at me. Thanks, Paul Paul Szabo psz@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/ School of Mathematics and Statistics University of Sydney Australia